:root{font-family:Inter,Yu Gothic,Hiragino Kaku Gothic ProN,Meiryo,system-ui,sans-serif;line-height:1.5;font-weight:400;color:#18221b;background:#edf1e8;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button{font-family:inherit;cursor:pointer}button:focus,button:focus-visible{outline:3px solid rgba(246,190,83,.8);outline-offset:2px}#root{min-height:100vh}.app-shell{align-items:center;display:grid;gap:32px;grid-template-columns:minmax(0,1fr) 320px;min-height:100vh;padding:32px}.play-area{align-items:center;display:grid;gap:28px;justify-items:center}.headline{max-width:720px;text-align:center}.eyebrow,.small-label{color:#5d6f61;display:block;font-size:.78rem;font-weight:700;letter-spacing:0;margin:0 0 6px;text-transform:uppercase}.headline h1{color:#152318;font-size:3rem;line-height:1;margin:0 0 12px}.headline p{color:#46524a;margin:0}.board-wrap{aspect-ratio:1;background:#193f2a;border:10px solid #17271d;box-shadow:0 24px 70px #141e163d;display:grid;grid-template-columns:24px repeat(8,minmax(34px,1fr));grid-template-rows:24px repeat(8,minmax(34px,1fr));max-width:min(78vh,720px);padding:8px;width:100%}.axis-label,.row-label,.corner-label{align-items:center;color:#d7eadb;display:flex;font-size:.8rem;font-weight:700;justify-content:center}.row-label{flex:0 0 24px}.board-row{display:contents}.cell{align-items:center;background:#277346;border:1px solid rgba(6,32,17,.45);border-radius:0;cursor:default;display:flex;justify-content:center;min-height:0;padding:0;position:relative}.cell:disabled{opacity:1}.cell.valid{cursor:pointer}.cell.valid:after{background:#eaf6e2b8;border-radius:999px;content:"";height:18%;position:absolute;width:18%}.cell.valid:hover{background:#32895a}.cell.last{box-shadow:inset 0 0 0 4px #f6be53db}.stone{border-radius:999px;box-shadow:inset -8px -10px 16px #00000038,0 8px 16px #0000003d;height:72%;width:72%}.stone.black{background:#151816}.stone.white{background:#f8f4e8;box-shadow:inset -8px -10px 16px #b0a68e5c,0 8px 16px #00000038}.side-panel{align-self:stretch;background:#f7f8f1;border-left:1px solid #d9dfd2;display:flex;flex-direction:column;gap:16px;justify-content:center;padding:32px}.scoreboard{display:grid;gap:12px;grid-template-columns:1fr 1fr}.scoreboard div,.status-box{background:#fff;border:1px solid #dfe5d8;border-radius:8px;padding:16px}.scoreboard strong,.status-box strong{color:#17231a;display:block;font-size:2rem;line-height:1.1}.status-box p{color:#58615b;margin:8px 0 0}.primary-action{background:#17271d;border:0;border-radius:8px;color:#fff;font-weight:700;min-height:48px}.primary-action:disabled{cursor:wait;opacity:.62}.error{background:#fff0ed;border:1px solid #f2b8ad;border-radius:8px;color:#a33b2b;margin:0;padding:12px 14px}@media(max-width:900px){.app-shell{grid-template-columns:1fr;padding:20px}.side-panel{border-left:0;border-top:1px solid #d9dfd2;margin-inline:-20px;padding:24px 20px}.headline h1{font-size:2.4rem}}